<template>
  <div class="wrapper" ref="wrapper">
    <div class="content">
      <slot></slot>
      <!-- <div class="loading" v-if="isPullUpLoad">
        <p>数据加载中...</p>
      </div>-->
    </div>
  </div>
</template>

<script>
import BScroll from "better-scroll";
export default {
  name: "Scroll",
  props: {
    probeType: {
      type: Number,
      default: 0
    },
    pullUpLoad: {
      type: Boolean,
      default: false
    }
  },
  data() {
    return {
      scroll: null,
      isPullUpLoad: false
    };
  },
  mounted() {
    this.scroll = new BScroll(this.$refs.wrapper, {
      scrollY: true,
      click: true,
      probeType: this.probeType,
      pullUpLoad: this.pullUpLoad,
      scrollbar: true
    });
    if (this.probeType == 2 || this.probeType == 3) {
      this.scroll.on("scroll", pos => {
        this.$emit("scroll", pos);
      });
    }
    // this.scroll.on("pullingUp", this.pullingUpHandler);
    if (this.pullUpLoad) {
      this.scroll.on("pullingUp", () => {
        this.isPullUpLoad = true;
        this.$emit("pullingUp");
      });
    }
  },
  methods: {
    scrollTo(x, y, time = 300) {
      this.scroll && this.scroll.scrollTo && this.scroll.scrollTo(x, y, time);
    },
    finishPullUp() {
      this.scroll && this.scroll.finishPullUp();
      this.isPullUpLoad = false;
    },
    refresh() {
      this.scroll && this.scroll.refresh();
    },
    getScrollY() {
      return this.scroll ? this.scroll.y : 0;
    }
  }
};
</script>

<style scoped>
.loading {
  width: 100%;
  text-align: center;
  height: 44px;
  line-height: 44px;
  background: #f1f2f3;
}
</style>